There are a 148 user reviews (from people that actually own or played one) in there. Sound quality got a 9.0 which is VERY good with so many reviews...means many voted it pretty high.

Go in there, read some of the reviews and see what YOU think of them...you could point him also to these, or at least pick out what you think is a good delay review (personally for myself, I don't like them listing tons of the gear they use, but I really like when someoone tells the main things...useing a single coil, through etc. and when they get to describing features, how they use it, tone, features...etc.